JP2001271869A - Vibration control device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vibration control device, capable of reducing capacity required for an actuator by leading in auxiliary vibration damping force for elastically deforming an elastic body requested to have considerable rigidity for supporting the weight of a vibration controlled object, in addition to the actuator for leading in the vibration damping force. SOLUTION: Air springs 12 for a vertical vibration control device 8, and a laminated rubber 9 for a horizontal vibration control device 7 are provided between a foundation 2 and a structure 4 above the foundation 2. Vertical and horizontal elastic springs 10 and 13, arranged in the compressed state in horizontal and vertical clearances C and V which are formed between the structure 4 and the foundation 2, and elongated to return to the natural length by the vertical and horizontal relative movement of the structure 4 and foundation 2, for generating spring force in the damping force acting direction of each hydraulic cylinder, are provided in parallel with the air springs 12 and the laminated rubber 9, in order to lead vibration damping auxiliary force in the damping force acting direction of vertical and horizontal hydraulic cylinders 20 and 21, in response to the vertical and horizontal vibration of the foundation 2.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vibration damping device, and more particularly to a vibration damping device capable of reducing a vibration damping force required for vibration damping.

[0002]

2. Description of the Related Art A vibration damping device is a base to which vibrations of the ground or floor are inputted, and a vibration damping object such as a building, precision equipment, other equipment or devices, articles, etc. which dislike the vibration installed on the base. An elastic body and an actuator for vibration damping are provided between the object and the object. In general, a vibration damping device uses a relative movement amount of a base with respect to a vibration damping target to maintain the vibration damping target in a stationary state at the same position even when vibration is input and the base moves. Moves the object to be damped in the opposite direction. At this time, the driving force of the actuator that moves the object to be damped by applying a reaction force to the base becomes the damping force. The elastic body allows the relative movement between the vibration damping target and the base by the actuator, and is forcibly elastically deformed by the vibration damping force of the actuator.

As the elastic body, various kinds of elastic bodies such as a laminated rubber for damping horizontal vibration and a coil spring or air spring for damping vertical vibration can be used. Furthermore, it is conceivable to perform three-dimensional vibration suppression by combining these elastic bodies for horizontal vibration suppression and vertical vibration suppression with actuators for horizontal and vertical movements. These elastic bodies support the weight of the object to be damped on the base for the purpose of allowing relative movement between the base and the object to be damped, whether for horizontal damping or vertical damping. It will be installed in a state where it does.

[0004]

In a conventional vibration damping device, for example, a device for horizontal vibration damping, the elastic body elastically deforms while supporting the weight of the vibration damping object as described above. Is required. By the way, in order for the elastic body to stably support the weight of the vibration damping object, the elastic body needs to have considerable hardness (rigidity). On the other hand, the elastic body needs to be elastically deformed flexibly by the damping force of the actuator in order to allow relative movement between the base and the vibration damping target. Therefore, the actuator needs a large driving force to overcome the hardness (rigidity) of the elastic body due to the hardness (rigidity) of the elastic body required to support the vibration damping target. was there.

[0005] Such a problem is the same in a vertical vibration isolating device using an elastic body such as an air spring or a coil spring. Particularly, in the case of vertical vibration suppression, the weight of the object to be damped is supported. There is a problem that the power of the actuator is required more than the horizontal vibration suppression because the direction in which the vibration is applied and the direction in which the elastic deformation occurs are the same. For this reason, it has been extremely difficult to realize horizontal and vertical two-dimensional vibration suppression and three-dimensional vibration suppression for a large structure having an extremely large weight.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and has a considerable rigidity for supporting the weight of an object to be damped, separately from an actuator for introducing a damping force. It is an object of the present invention to provide a vibration damping device capable of reducing the capability required for an actuator by introducing an auxiliary vibration damping force for elastically deforming a required elastic body.

[0007]

According to the present invention, there is provided a vibration damping apparatus, comprising: a vibration damping object that is horizontally positioned between a base to which vibration is input and a vibration damping object above the base. In a vibration damping device provided with a horizontal elastic body that elastically supports so as to be relatively movable and a horizontal actuator that applies a horizontal vibration damping force to the vibration damping object, A horizontal force applying means for introducing a vibration damping assisting force in a vibration damping force acting direction of the horizontal actuator in response to a horizontal vibration of the base is provided.

A vertical elastic body for elastically supporting the vibration damping object so as to be vertically movable relative to the base is provided between the horizontal elastic body between the vibration damping object and the base. A vertical actuator is provided in series, and a vertical actuator for applying a vertical vibration damping force to the vibration damping object is provided.

Further, a vertical force applying means is provided in parallel with the vertical elastic body for introducing a vibration damping assisting force in a vibration damping force acting direction of the vertical actuator in response to the vertical vibration of the base. It is characterized by having.

[0010] Further, a vertical elastic body for elastically supporting the vibration damping object vertically movable relative to the base together with the horizontal elastic body between the vibration damping object and the base, A vertical actuator is provided in parallel with the horizontal elastic body, and a vertical actuator for applying a vertical vibration damping force to the vibration damping target is provided.

In addition, a vertical force applying means is provided in parallel with the vertical elastic body for introducing a vibration damping assisting force in a vibration damping force acting direction of the vertical actuator in response to the vertical vibration of the base. It is characterized by having.

Further, the horizontal force applying means is arranged in a compressed state in a vertical gap formed between the vibration damping object and the base, and a horizontal relative movement between the vibration damping object and the base is provided. And a horizontal urging means for generating a resilient force in the direction of the vibration damping force of the horizontal actuator by extending to restore the natural length.

The vertical force applying means is arranged in a compressed state in a horizontal gap formed between the vibration damping object and the base, and moves up and down relative to the vibration damping object and the base. And a vertical urging means which expands to restore a natural length and generates a resilient force in the direction of the vibration damping force of the vertical actuator.

A vertical elastic body for elastically supporting the vibration damping object so as to be vertically movable relative to the base, between the base to which the vibration is input and the vibration damping object above the base; In a vibration damping device provided with a vertical actuator for applying a vertical damping force to an object to be damped, the vertical actuator responds to the vertical vibration of the base in parallel with the vertical elastic body. A vertical force applying means for introducing a vibration damping assistance force in the direction of the vibration damping force action is provided.

Further, a guide means is provided between the vibration damping object and the base for guiding the vertical movement of the vibration damping object relative to the base.

[0016]

Preferred embodiments of the present invention will be described below in detail with reference to the accompanying drawings. FIGS. 1 and 2 show a three-dimensional vibration damping device 1 as an embodiment of the vibration damping device according to the present invention. An upper foundation 3 made of reinforced concrete is constructed above a reinforced concrete foundation 2 as a base to which vibrations such as seismic motion including a vertical vibration component and a horizontal vibration component are inputted, and above the upper foundation 3 A structure 4 as an object to be damped is constructed, and the structure 4 is provided on the foundation 2 via the upper foundation 3. The upper foundation 3 is formed in a dish shape with a vertical wall 5 erected in an annular shape along the circumferential direction at an outer peripheral edge of the upper foundation 3 so as to surround a lower part of the structure 4. On the foundation 2, a plurality of projections 6 made of reinforced concrete, which are opposed to each other from the horizontal direction on the outer peripheral wall surface of the vertical wall 5 while standing up and enclosing the upper foundation 3 from front and rear and left and right, are constructed. Between the foundation 2 and the upper foundation 3, a horizontal vibration damping device 7 for damping horizontal vibration while supporting the weight of the structure 4 and the upper foundation 3 is provided.
Is provided, and a vertical vibration damping device 8 for damping vertical vibration while supporting the weight of the structure 4 is provided between the upper foundation 3 and the structure 4. Therefore, in this embodiment, the vertical vibration damping device 8 and the horizontal vibration damping device 7 are provided in series in the vertical direction.

The horizontal vibration damping device 7 is mainly composed of a plurality of horizontal elastic bodies, for example, a laminated rubber 9 provided at intervals in a vertical gap V between the foundation 2 and the upper foundation 3 on the structure side. A plurality of horizontal biasing means as horizontal force applying means to be described later, for example, a horizontal elastic spring 10 such as a coil spring; A plurality of horizontal actuators provided between the projections 6 and the outer peripheral wall surface of the vertical wall 5 of the upper foundation 3 so as to surround the upper foundation 3 from front to rear and right and left, and to act on the upper foundation 3 in horizontal vibration damping force; For example, it comprises a hydraulic cylinder 20. The laminated rubber 9 is
The upper and lower ends thereof are fixedly provided on the upper foundation 3 and the foundation 2, respectively, so that the upper foundation 3 on the structure side can be moved relative to the foundation 2 while bearing the weight of the structure 4. It has elastic support. The hydraulic cylinder 20 has its both ends connected to the projection 6 and the vertical wall 5, so that the base 2 that vibrates horizontally can be used.
In order to keep the upper foundation 3 stationary at a fixed position with respect to the upper foundation 3, the projections 6 are horizontally moved with a displacement corresponding to the horizontal movement amount of the foundation 2 with respect to the upper foundation 3 on the structure side. And the vertical wall 5 is driven to expand and contract. Although not shown in FIGS. 1 and 2, between the foundation 2 and the upper foundation 3, there is provided a horizontal damping means 11 such as a hydraulic damper which is actuated by the horizontal relative movement of the two to dampen horizontal vibration. Provided.

On the other hand, the vertical vibration isolator 9 is mainly provided with a plurality of vertically elastic bodies, such as disc springs, provided at intervals in the vertical gap W between the structure 4 and the upper foundation 3 on the foundation side. And a plurality of coil springs, air springs 12, and a plurality of spaced-aparts in a horizontal gap C between the inner peripheral wall surface of the vertical wall 5 of the upper foundation 3 and the side surface of the structure 4 so as to surround the structure 4 from front to back and right and left. A plurality of vertical biasing means as a vertical force applying means to be described later, for example, a vertical elastic spring 13 such as a coil spring, and a plurality of vertical springs 13 are provided adjacent to the air spring 12 at intervals in the vertical gap W. A vertical actuator for applying a vertical damping force to the object 4;
For example, a hydraulic cylinder 21 is provided. Air spring 1
The upper and lower ends 2 are integrally fixed to the upper foundation 3 and the structure 4, respectively, and the structure 4 is moved up and down with respect to the upper foundation 3 on the foundation side while bearing the weight of the structure 4. It is elastically supported for relative movement. Hydraulic cylinder 2
Reference numeral 1 denotes a structure of the upper foundation 3 which is a foundation side in which both ends thereof are coupled to the structure 4 and the upper foundation 3 so as to keep the structure 4 stationary at a constant height position with respect to the upper foundation 3 which vibrates up and down. In order to move the structure 4 up and down with a displacement corresponding to the amount of vertical movement with respect to the object 4, the upper base 3 and the structure 4 are driven to expand and contract. Further, between the structure 4 and the upper foundation 3, there is provided a vertical damping means 14 such as a hydraulic damper which is operated by the vertical relative movement of the two to attenuate the vertical vibration.

Further, as shown in the drawings, the base 2, the upper foundation 3, and the structure 4 are provided at appropriate positions on the base 2, the upper base 3, and the upper part in order to control the driving of the hydraulic cylinders 20, 21 for vertical / horizontal vibration suppression. Detecting means 22 such as a displacement sensor, a speed sensor, and an acceleration sensor for detecting a vibration state of the foundation 3 and the structure 4 are provided, and a detection signal from these detecting means 22 determines a control amount of the hydraulic cylinders 20 and 21. This is input to control means (not shown), which achieves three-dimensional vibration suppression.

On the other hand, between the structure 4 and the upper foundation 3 on the foundation side, the structure 4 is surrounded from front, rear, left and right.
For example, a plurality of linear bearings 15 are provided as guide means for guiding the vertical movement of the structure 4 with respect to the upper foundation 3. These linear bearings 15 are provided along a vertical direction, sandwiched between a pair of vertical elastic springs 13. This linear bearing is mainly provided along a linear rail provided on each side surface of the structure along the vertical direction, and the linear rail is provided along the linear rail on each inner peripheral wall surface of the opposed vertical wall. Consists of a U-shaped guide rail that sandwiches and restrains the rails from both sides in the horizontal direction and the vertical wall, and a bearing that is provided between these guide rails and the linear rail so as to roll freely, and allows both rails to slide. Is done. These linear bearings, which are arranged around the front, rear, left and right of the structure, guide the slide while allowing the vertical relative movement between the upper foundation and the structure by sliding between the linear rail and the guide rail. The horizontal displacement of the structure relative to the upper foundation and the rotational displacement (rocking) in the horizontal plane with respect to the upper foundation can be restrained by restraining the linear rail from both sides in the horizontal direction and the vertical wall side by the rail.

In particular, the horizontal elastic spring 10 and the vertical elastic spring 13 are arranged as follows. Taking the horizontal elastic spring 10 as an example, as shown in FIG. 3, the horizontal elastic spring 10 is connected to the foundation 2 and the upper foundation 3 by a pin joint 17 so as to be rotatable at least around a horizontal axis, respectively. Thus, it can be tilted in the horizontal direction and only an axial force is applied. The horizontal elastic spring 10 is formed to be longer than the dimension of the vertical gap V between the foundation 2 and the upper foundation 3, and is disposed vertically straight in the gap V in a compressed state. That is, the horizontal elastic spring 10 in the compressed state is formed between the foundation 2 and the upper foundation 3 so that the resilient force P acts vertically on the foundation 2 and the upper foundation 3 when the foundation 2 is at rest. It is installed in the vertical gap V between the shortest and perpendicular to these. When the upper foundation 3 moves horizontally relative to the foundation 2 in response to the movement y, the horizontal elastic spring 10 can be inclined to expand obliquely to restore the compressed state to its natural length, as shown in FIG. It has become. The horizontal elastic spring 10 tilted in this manner not only has a component force Pz acting vertically on both the upper foundation 3 and the foundation 2 but also the upper foundation 3
Also, a component force Py that causes a horizontal relative movement between the base 2 and the base 2 is generated, so that the horizontal relative movement between the base 2 and the upper base 3 can be promoted.

The same applies to the upper and lower elastic springs 13. The upper and lower elastic springs 13 rotate at least around the horizontal axis at the left and right ends on the side surfaces of the structure 4 and the inner peripheral wall surface of the vertical wall 5 of the upper foundation 3, respectively. It is freely connected by a pin joint 16 so that it can be tilted up and down and only an axial force is applied. The upper and lower elastic springs 13
Horizontal gap C between the side surface of the structure 4 and the inner peripheral wall surface of the vertical wall 5
Is formed longer than the dimension of, and is disposed vertically straight in the gap C in a compressed state. That is, the upper and lower elastic springs 13 in the compressed state are connected to the vertical wall 5 so that the elastic force (P) acts on the vertical wall 5 and the structure 4 from the horizontal direction to the vertical direction when the structure 4 is at rest. It is mounted at the shortest in the horizontal gap C with the structure 4 and perpendicular to them. The vertical elastic spring 13 tilts obliquely in response to the vertical movement (y) of the structure 4 relative to the upper foundation 3 in response to the vertical movement, and can be extended to restore the compressed state to its natural length. I have. The vertically elastic spring 13 tilted in this manner causes not only a component force (Pz) acting vertically on both the upper foundation 3 and the structure 4 but also a vertical relative movement between the upper foundation 3 and the structure 4. A component force (Py) is also generated, whereby the vertical relative movement between the structure 4 and the upper foundation 3 can be promoted.

In the three-dimensional vibration damping device 1 of the present embodiment having the above configuration, when a ground motion including a horizontal vibration component and a vertical vibration component is input to the foundation 2, the horizontal vibration component is For the vertical vibration component, the vertical vibration damping device 8 exerts a vibration damping action.

To explain the horizontal vibration component, the horizontal vibration component tends to vibrate the upper foundation 3 in the horizontal direction with respect to the foundation 2. At this time, the hydraulic damper 1
Under the damping action of 1, the horizontal damping force is exerted from the hydraulic cylinder 20, thereby causing the laminated rubber 9 to be elastically deformed in the horizontal direction. It is to be damped. At this time, in response to the horizontal relative movement y of the upper foundation 3 with respect to the foundation 2, that is, as shown in FIG. 3 due to the horizontal relative movement, the horizontal elastic spring 10 is provided with pin joints 17 at both ends thereof. And is naturally tilted obliquely at an angle θ with respect to the vertical plane, and expands to restore the compressed state to its natural length. The tilted horizontal elastic spring 10 generates not only a component force Pz acting vertically on both the upper foundation 3 and the foundation 2 but also a component force Py causing a horizontal relative movement between the upper foundation 3 and the foundation 2. Until the horizontal elastic spring 10 is restored to its natural length, the latter component force Py that induces the horizontal relative movement is, as apparent from FIG. Cylinder 2
0 acts rightward when driving the upper foundation 3 relatively to the foundation 2 to the right, and acts leftward when driving the upper foundation 3 relatively to the left, in a direction to promote the relative movement between the two. The horizontal elastic force Py of the horizontal elastic spring 10 generated by the horizontal relative movement between the foundation 2 and the upper foundation 3 has already been leveled by the introduction of the damping force from the hydraulic cylinder 20 to the upper foundation 3. In this direction, the laminated rubber 9 undergoing considerable elastic deformation in the direction becomes a vibration damping assisting force with respect to the vibration damping force of the hydraulic cylinder 20. The ability can be reduced.

FIG. 4 shows, in a qualitative sense, the elastic characteristics K of the horizontal elastic body 9 and the horizontal elastic spring 10 respectively.
s and K, and an elastic characteristic Kc obtained by combining the horizontal elastic body 9 and the horizontal elastic spring 10 are shown. The horizontal elastic body 9 shows a linear characteristic Ks. On the other hand, the horizontal elastic spring 10 has the elastic characteristic K opposite to that of the horizontal elastic body 9 from the above-described arrangement configuration until the natural elastic length is restored from the compressed state to the natural length (substantially from the S position to the S position). In this region R, the vibration damping device 1 is applied.
It is understood that when these are combined as the elastic bodies 9 and 10 in a parallel relationship, a softer elastic characteristic Kc can be ensured in the region R than in the case of the horizontal elastic body 9 alone.

On the other hand, the vertical vibration component will be described.
The vertical vibration component tends to cause the structure 4 to vibrate vertically with respect to the upper foundation 3. At this time, under the damping action of the hydraulic damper 14, a vertical damping force from the hydraulic cylinder 21 acts on the structure 4.
The structure 4 is attached to the upper foundation 3
, And is damped in the vertical direction. At this time, in response to the vertical relative movement of the structure 4 with respect to the upper foundation 3, in response to this, that is, due to the vertical relative movement, the vertical elastic spring 13 is naturally inclined obliquely through the pin joints 16 at both ends thereof. It is tilted and expands to restore it from its compressed state to its natural length. The tilted vertical elastic spring 13 generates not only a component force acting vertically on both the upper foundation 3 and the structure 4, but also a component force causing the upper foundation 3 and the structure 4 to move vertically relative to each other, Until it recovers to its natural length, the component force that induces this vertical relative movement acts in the direction in which the hydraulic cylinder 21 promotes the relative movement in the direction of the damping force acting. The vertical elastic force of the vertical elastic spring 13 generated by the vertical relative movement of the structure 4 and the upper foundation 3 in this manner is equivalent to the hydraulic cylinder 21.
To further deform the air spring 12 which has already undergone considerable elastic deformation in the vertical direction by the introduction of the damping force to the structure 4 from
It becomes a vibration damping assistance force with respect to the vibration damping force of the hydraulic cylinder 21,
The required performance and required performance required for the hydraulic cylinder 21 can be reduced by introducing the vibration damping assisting force.
The horizontal elastic body 9 and the horizontal elastic spring 10 shown in FIG.
The same applies to the combination of the vertical elastic body 12 and the vertical elastic spring 13.

Therefore, in the three-dimensional vibration damping device 1 of the present embodiment, in order to support the weight of the structure 4 and the like separately from the hydraulic cylinders 20 and 21 for both vertical vibration and horizontal vibration. By introducing auxiliary vibration damping force for elastically deforming the vertical and horizontal elastic bodies such as the laminated rubber 9 and the air spring 12 which are required to have considerable rigidity,
0,21 required capacity can be reduced,
Effective three-dimensional vibration suppression can be realized.

In this embodiment, when the structure 4 moves up and down relative to the upper foundation 3, the linear bearing 15
The vertical movement of the structure 4 can be guided while restraining the horizontal displacement and the rotational displacement (locking) of the structure 4 with respect to the upper foundation 3 by the upper base 3, so that unstable behavior of the structure 4 can be prevented. In addition, the vertical vibration damping device 8 can function stably.

In the above embodiment, the vertical vibration damping device 8
Is provided above and the horizontal vibration damping device 7 is provided below, but the arrangement relationship of these vibration damping devices 7 and 8 may be upside down.

FIG. 5 shows various modifications of the above embodiment. (A) is a model in which the vertical vibration damping device 8 is omitted and only the horizontal vibration damping device 7 is used, (b) is a model in which the horizontal vibration damping device 7 is omitted and only the vertical vibration damping device 8 is used, (C) is a model in which only the air spring 12 is provided in series with the laminated rubber 9 in the vertical direction based on the model of (a), and the vertical elastic spring 13 is omitted, and (d) is a model of (a). The air springs 12 are provided in parallel with the laminated rubber 9 so that the weight of the structure 4 is supported by both of them. A model in which the upper and lower elastic springs 13 are omitted, and (e) is (d) Is a model in which an upper and lower elastic spring 13 is provided in parallel with the air spring 12 based on the above model. The vertical series model of the horizontal vibration damping device 7 and the vertical vibration damping device 8 of the above-described embodiment is changed to a horizontal parallel model. These models have the same effects as the above embodiment An effect.

In the above-described embodiment, the structure in which the entire structure 4 is installed so as to be surrounded by the dish-shaped upper foundation 3 has been described as an example. As shown in FIG. A plurality of legs 4a may be formed vertically and horizontally at intervals from the bottom surface, and a plurality of upper bases 3 may be provided on the base 2 side corresponding to the legs 4a, respectively. Accordingly, the three-dimensional vibration damping device 1 can be preferably installed even for the structure 4 having a large bottom area.

The pin joints 16 and 17 of the above embodiment
May be a universal joint that allows rotation about three axes.

Although the hydraulic cylinders 20 and 21 have been described as examples of the horizontal actuator and the vertical actuator, various power driving means such as a motor driven ball screw mechanism can be adopted as these actuators.

Although the hydraulic dampers 11 and 14 have been described as examples of the horizontal damping means and the vertical damping means, examples of these damping means include friction dampers, steel rod dampers, and dampers employing viscoelastic materials. Any damping means that exerts a damping action according to a change in the distance between the objects may be used.

Further, in the above-described embodiment, the structure 4 has been described as an example of the object to be damped. However, it is needless to say that precision equipment and other equipment, devices, and articles which dislike vibration may be used. is there.

Further, in the above embodiment, the seismic motion is exemplified as the input vibration, but it is needless to say that traffic vibration or daily vibration may be used.

[0037]

In summary, according to the present invention, the horizontal force applying means and the vertical force applying means are used to support the weight of the vibration damping object separately from the actuator for introducing the vibration damping force. It is possible to introduce an auxiliary vibration damping force for elastically deforming an elastic body which is required to have a considerable rigidity, thereby reducing the capacity required for a vibration damping actuator, and providing an effective vibration damping actuator. The vibration effect can be secured.

[Brief description of the drawings]

FIG. 1 is a schematic side sectional view of a three-dimensional vibration damping device showing a preferred embodiment of a vibration damping device according to the present invention.

FIG. 2 is a schematic plan sectional view of a three-dimensional vibration damping device showing a preferred embodiment of the vibration damping device according to the present invention.

FIG. 3 is an enlarged side view of a main part showing an operating state of a vertical elastic spring used in a preferred embodiment of the vibration damping device according to the present invention.

FIG. 4 is a graph showing elastic characteristics of a combination of a vertical elastic spring and a vertical elastic body used in a preferred embodiment of the vibration damping device according to the present invention.

FIG. 5 is a schematic explanatory view showing a deformation model of the vibration damping device according to the present invention.

FIG. 6 is a main part schematic side view showing another embodiment of the vibration damping device according to the present invention.

[Explanation of symbols]

 2 foundation 4 structure 7 horizontal vibration damping device 8 vertical vibration damping device 9 laminated rubber 10 horizontal elastic spring 12 air spring 13 vertical elastic spring 20 horizontal hydraulic cylinder 21 vertical hydraulic cylinder C horizontal gap V vertical gap

Claims (9)

[Claims] A horizontal elastic body for elastically supporting the vibration damping object so as to be horizontally movable relative to the base, between a base to which vibration is input and the vibration damping object above the base; In a vibration damping device provided with a horizontal actuator for applying a horizontal vibration damping force to an object to be damped, the horizontal actuator is provided in parallel with the horizontal elastic body in response to horizontal vibration of the base. A vibration damping device provided with horizontal force means for introducing a vibration damping assistance force in a direction of a vibration damping force action. 2. A method according to claim 1, further comprising:
A vertical elastic body for elastically supporting the vibration damping object so as to be vertically movable relative to the base is provided in series with the horizontal elastic body, and a vertical vibration damping force is applied to the vibration damping object. 2. The vibration damping device according to claim 1, further comprising a vertical actuator that acts. 3. A vertical force applying means for introducing a vibration damping assisting force in a direction of a vibration damping force acting on the vertical actuator in response to a vertical vibration of the base in parallel with the vertical elastic body. The vibration damping device according to claim 2, wherein: 4. Between the vibration damping object and the base,
Along with the horizontal elastic body, a vertical elastic body that elastically supports the vibration damping object so as to be vertically movable relative to the base is provided in parallel with the horizontal elastic body. 2. The vibration damping device according to claim 1, further comprising a vertical actuator for applying a vertical vibration damping force. 5. A vertical force applying means for introducing a vibration damping assistance force in a direction of a vibration damping force acting on said vertical actuator in response to a vertical vibration of said base in parallel with said vertical elastic body. The vibration damping device according to claim 4, wherein: 6. The horizontal force applying means is disposed in a compressed state in a vertical gap formed between the vibration damping target and the base, and a horizontal relative movement between the vibration damping target and the base is provided. 6. A horizontal biasing means for generating a resilient force in the direction of the vibration-damping force of the horizontal actuator by extending to restore to a natural length in the horizontal direction. Vibration control device. 7. The vertical force applying means is arranged in a compressed state in a horizontal gap formed between the vibration damping object and the base, and moves up and down relative to the vibration damping object and the base. 6. The vibration damping device according to claim 3, wherein the vibration damping device is a vertical urging means that generates a resilient force in a vibration damping force acting direction of the vertical actuator by extending to restore a natural length. . 8. A vertical elastic body for elastically supporting the vibration damping object so as to be vertically movable relative to the base, between the base to which the vibration is inputted and the vibration damping object above the base. In a vibration damping device provided with a vertical actuator for applying a vertical vibration damping force to a vibration damping object, the vertical actuator responds to the vertical vibration of the base in parallel with the vertical elastic body. A vibration damping device comprising vertical force applying means for introducing a vibration damping assistance force in a direction of a vibration damping force action. 9. The apparatus according to claim 1, further comprising a guide means for guiding a vertical movement of the vibration damping object relative to the base between the vibration damping object and the base. Seismic isolation device described in section.